Mechanical movement



(No Model.) 2 Sheets-Sheet 1. H. SOHULZE-BERGE.

MECHANICAL MOVEMENT.

Patentedz June 23, 1885.

12* Mum 2 Sheets-Sheet. 2.

(No Model.)

H. SOHULZE-BERGE. MEGHANIGAL MOVEMENT.

Patented June 23, 1885 Q Aflorney:

UNITED STATES PATENT OFFICE.

HERMANN SCHULZE-BERGE, OF ROCHESTER, PENNSYLVANIA.

MECHANICAL MOVEMENT.

SPECIFICATION forming part of Letters Patent No. 320,706, dated June 23,1885.

Application filed February 6, 1885.

Q0 aZZ whom, it may concern.-

Be it known that I, HERMANN ScHULZE- BERGE, of Rochester, in the countyof Beaver and State of Pennsylvania, have invented a new and usefulImprovement in Mechanical Movements, and I do hereby declare thefollowing to be a full, clear, and exact descrip tion thereof.

My invention relates to an improvement in eccentrics; and it consists ina combination of mechanical devices by which a slide mounted upon arevoluble shaft or axle, and capable of transmitting an eccentric motiontherefrom, can be caused to move adjustably, even while the shaft is inrevolution.

My improvement is illustrated in the accompanying drawings, in whichFigure l is a plan View of the adjustable eccentric. Fig. 2 is avertical section on the line :0 a: of Fig. 1. Fig. 3 is an edge view.Fig. 4 is arear view, partly in section, on the line x x of Fig. 3. Fig.5 is a front view of a modification. Fig. 6 is a side view of the same,partly in section. Fig. 7 is a View similar to Fig. 6 when the partshave assumed different relative positions.

Like letters of reference indicate like parts.

In the drawings, a represents the rotary shaft or axle of a machine. Aportion of its periphery is squared or provided with a rigid block, a,on which is mounted a radiallyslotted slide or disk I). (See Figs. 1 and2.) On this block 0 the slide is movable in its slot at right angles tothe shaft.

Pivotally attached to the slide 1) at a point, e, is a pair of levers,d. A second pair of levers, f, is also pivotally attached to the squaredportion of the shaft a, as at g. The levers d andf connect pivotally ath, from which point a third pair of levers, t, reaches to a sleeve, 7r,which is movably mounted on the axle a. The pair of levers i connectpivotally with the sleeve is at points Z and Z, which are situate on thesleeve opposite each other. From this construction it becomes evidentthat if sleeve is be forced toward the disk I) that the angle formed bythe levers d and f must increase, and that the slide 1) is forced tomove away from its prior location. If the center of the sliding disk I)be coincident with the center of the axle a, as shown in Figs. 1, 2, 3,and 4, it becomes evident that the spreading of the levers (l and f willcause the disk b to assume the (No model.)

functions of an eccentric, and that as the angle between the levers dand f approaches one hundred and eighty degrees the eccentricity of thedisk will grow correspondingly. The pur-- pose of having double leversd, f, and t is to give steadiness of motion. If convenient, only one ofeach need be used. The sleeve is is mounted upon the shaft a so as to bemovable thereon lengthwise, but is prevented from independent rotationby means of a feather, which fits within a longitudinal and superficialkeyway, m, on the shaft. Thesurface of the sleeve is is grooved, asshown in Fig. 2, in which groove an annular collar, n, is fittedloosely, so that the sleeve can revolve with the shaft a, while thecollar or ring a does not partake in the revolving motion. To this endthe ring or collar a is provided at two opposite places with studs orpivots 0 0, as shown in Figs. 2 and 4, which studs 0 are pivoted to thesides of a yoke or lever, p. The yoke 12 is provided on one end with alever-handle, 1)", (see Figs. 3 and 4,) while the other end of the yokeconnects pivotally with any firm or rigid point. In the case illustratedin Figs. 2, 3, and 4t it is pivoted to a part of the frame or bearing qof the shaft a by a pivot, 1'. If, now, the handle 1) of the yokep bemoved around the pivot r, the sleeve is forced to move along the shaftto, and to spread the toggle-levers d and f, as before described. Bythese means the slide or disk b is capable of being made to change intoan eccentric of adj nstable throw at any time, whether the axle a be inmotion or not. The distance of motion of the handle p will determine theeccentricity of the slide or disk I), and by fixing the handle in anydesired position the eccentricity may be made permanent.

I have illustrated a device for this purpose in Figs. 6 and 7, whichwill be explained hereinafter.

The eccentric throw of the disk I) when it is properly adjusted and isrotated by the shaft a is communicated to the parts of a machine in anysuitable manner. I

In the first four figures of the drawings I have shown an annularcam-yoke, S, which is fitted loosely around the disk b, and is providedwith a rigid arm, S. An eccentric rotation of the disk I) willcommunicate a reciprocating and an oscillating motion to the arm S, aswill be readily intelligible.

In place of the knee-lever arrangement shown for eccentrically adjustingthe disk 1) upon its shaft, it is obvious that other wellknownmechanical devices, such as are used in friction-clutches, can beemployed.

The modification shown in Figs. 5, 6, and 7 differs from that beforedescribed only in the difference in manner of transmitting motion fromthe adjustable slide I). In these figures the slide b is shown movablymounted in a radial slot, 0, in a crank-arm, c, which is affixed to theend of the rotary shaft a. The levers d are pivoted to the slide 1), andthe leversf to the arm 0 at g. The adjustable slide is moved in its slotto a greater or less distance from the axis of the shaft a by means ofthe Sliding collar 7t and the mechanism already described. Motion istransmitted from the eccentric by means of a crank-pin, I)", or othersuitable device. The preferable means for adjusting and fixing theeccentricity of the slide 1) is shown in Figs. 5, 6, and 7. The yoke 1)being pivoted at')- to the frame g, which forms a bearing for the shafta, is pivotally connected at its lower end, 1', to a threaded nut, u.Into this nut ugearsaserew, c, which is ball-jointed to the frame q, asshown at w in Fig. 6, and 'is operated by a hand-wheel, By turningthewheel w the shaft is rotated, and the nut to thereby screwed towardand away from its end, thus moving the sleeve is and regulating thethrow of the eccentric. In this way the eccentricity can be fixed withgreat accuracy. 7

My improvementis adapted to use in alarge nu inb'cr of machines, such assewing-machines and others. It is especially useful when the throw ofthe eccentric is to be changed, when the machine is running ata highrate of speed without slacking or stopping the engine.

This may be done manually by means of. the

lever or yoke 12, or automatically by actuating the yoke from a part ofthe machine so as to change the throw at determined periods.

In applying this adjustable eccentric to regulating the steam-inlet forsteamengines, &c., the handle of the yoke p may be set in connectionwith a governor so as to cause the governor to adjustand regulateautomatically the larger or smaller degree of eccentricity of the disks.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. As an adjustable eccentric, a slide connected with a rotary shaft andmovable toward and away from the axis thereof, in combination with anon-rotatory yoke or lever capable of moving the slide during rotationof the shaft, said slide being capable of transmitting motion,substantially as and for the purposes described.

2. As an adjustable eccentric, the combination, with arotary shaft, of aslide capable of rotating therewith, and movable toward and away fromits axis, and provided with a circular surface for transmitting motion,leverarms connecting with said slide and with said shaft, and capable ofimpartingthe said motion to the slide, and a non-rotatory yoke foractuating the said levers, substantially as and for the purposesdescribed.

3. As an adjustable eccentric, the combination,with a rotatory shaft, ofa slide capable of rotation therewith and movable toward and away fromits axis, and provided with a circular surface for transmittingmotion,alever-arm connecting with said slide and capable of impartingsaid motion thereto, substantially and for the purposes described.

4. As an adjustable eccentric, the combination,with a rotatory shaft, ofa slide capable of rotation therewith and movable toward and away fromits axis, and provided with a circular surface for transmitting mot-ion,lever arms connecting with said slide and with said shaft and capable ofimparting the said motion to the slide, a sleeve mounted on the shaft,rotatory therewith, movable longitudinally thereon, and connected withsaid lever-arms, and a non-rotatory yoke for actuating said sleeve,substantially as and for the purposes described.

5. The combination, with a rotatory shaft, of a slide capable ofrotation therewith and movable towards'and away from its axis, andprovided with a circular surface for trans mitting motion, lever-armsconnecting with said slide and with said shaft and capable of impartingthe said motion to the slide, a sleeve mounted on the shaft, rotatorytherewith, movable longitudinally thereon,and connected with saidlever-arms, a collarloosely mounted on said sleeve so that the lattermay rotate therein, and a non-rotatory yoke connected with said collarand capable of moving the collar and the sleeve, substantially as andfor the purposes described.

6. The combination, with a rotatory shaft, ofa slide capable of rotationtherewith and movable toward and away from its axis, and provided with acircular surface for transmitting motion, lever-arms connecting withsaid slide and with said shaft, and capable of imparting the said motionto the slide, a nonrotatory yoke for actuating said levers, and ascrew-shaft gearing into said yoke and capable of moving the same byrotation of the shaft, substantially as and for the purposes described.

In testimony whereof I have hereunto set my hand this 5th day ofJanuary, A. D. 1885.

I-IERMANN SOHULZEBERGE.

\Vitnesses:

W. B. OoRwIN, T. \V. BAKEWELL.

